[INFO] crate attribution 0.2.0 is already in cache
[INFO] checking attribution-0.2.0 against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] extracting crate attribution 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate attribution 0.2.0 on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate attribution 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate attribution 0.2.0
[INFO] tweaked toml for crates.io crate attribution 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5a15ec3565ed75f326a01f07fe416560e2784e279d808cda6a650282be2599ee
[INFO] running `"docker" "start" "-a" "5a15ec3565ed75f326a01f07fe416560e2784e279d808cda6a650282be2599ee"`
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]    Compiling attribution-macros v0.2.1
[INFO] [stderr]    Compiling shrinkwraprs v0.2.3
[INFO] [stderr]     Checking attribution v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `syn::Item`
[INFO] [stderr]   --> examples/gs.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use syn::Item;
[INFO] [stderr]    |     ^^^^^^^^^ no `Item` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `syn::ItemStruct`
[INFO] [stderr]   --> examples/gs.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use syn::ItemStruct;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ no `ItemStruct` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `Item` in `syn`
[INFO] [stderr]   --> examples/ez_trace.rs:24:17
[INFO] [stderr]    |
[INFO] [stderr] 24 |     if let syn::Item::Fn(tagged_fn) = syn::parse2(tagged).unwrap() {
[INFO] [stderr]    |                 ^^^^ could not find `Item` in `syn`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ItemFn` in crate `syn`
[INFO] [stderr]   --> examples/ez_trace.rs:31:54
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn impl_trace(attr: EzTraceArgs, mut tagged_fn: syn::ItemFn) -> proc_macro2::TokenStream {
[INFO] [stderr]    |                                                      ^^^^^^ not found in `syn`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Block` in crate `syn`
[INFO] [stderr]   --> examples/ez_trace.rs:51:25
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let new_block: syn::Block = syn::parse_quote! {
[INFO] [stderr]    |                         ^^^^^ not found in `syn`
[INFO] [stderr]    |
[INFO] [stderr] help: there is an enum variant `syn::Expr::Block`; try using the variant's enum
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let new_block: syn::Expr = syn::parse_quote! {
[INFO] [stderr]    |                    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `attribution`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `quote::ToTokens`
[INFO] [stderr]  --> examples/ez_trace.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use quote::ToTokens;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: could not compile `attribution`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5a15ec3565ed75f326a01f07fe416560e2784e279d808cda6a650282be2599ee"`
[INFO] running `"docker" "rm" "-f" "5a15ec3565ed75f326a01f07fe416560e2784e279d808cda6a650282be2599ee"`
[INFO] [stdout] 5a15ec3565ed75f326a01f07fe416560e2784e279d808cda6a650282be2599ee